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Diffstat (limited to 'sys/arch/amd64/include/mcontext.h')
| -rw-r--r-- | sys/arch/amd64/include/mcontext.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/sys/arch/amd64/include/mcontext.h b/sys/arch/amd64/include/mcontext.h new file mode 100644 index 00000000000..ec1ed5f816c --- /dev/null +++ b/sys/arch/amd64/include/mcontext.h @@ -0,0 +1,108 @@ +/* $OpenBSD: mcontext.h,v 1.1 2004/01/28 01:39:39 mickey Exp $ */ +/* $NetBSD: mcontext.h,v 1.1 2003/04/26 18:39:44 fvdl Exp $ */ + +/*- + * Copyright (c) 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Klaus Klein. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _AMD64_MCONTEXT_H_ +#define _AMD64_MCONTEXT_H_ + +/* + * Layout of mcontext_t according to the System V Application Binary Interface, + * Intel386(tm) Architecture Processor Supplement, Fourth Edition. + */ + +/* + * General register state + */ +#define _NGREG 26 +typedef long __greg_t; +typedef __greg_t __gregset_t[_NGREG]; + +/* + * This is laid out to match trapframe and intrframe (see <machine/frame.h>). + * Hence, memcpy between gregs and a trapframe is possible. + */ +#define _REG_RDI 0 +#define _REG_RSI 1 +#define _REG_RDX 2 +#define _REG_RCX 3 +#define _REG_R8 4 +#define _REG_R9 5 +#define _REG_R10 6 +#define _REG_R11 7 +#define _REG_R12 8 +#define _REG_R13 9 +#define _REG_R14 10 +#define _REG_R15 11 +#define _REG_RBP 12 +#define _REG_RBX 13 +#define _REG_RAX 14 +#define _REG_GS 15 +#define _REG_FS 16 +#define _REG_ES 17 +#define _REG_DS 18 +#define _REG_TRAPNO 19 +#define _REG_ERR 20 +#define _REG_RIP 21 +#define _REG_CS 22 +#define _REG_RFL 23 +#define _REG_URSP 24 +#define _REG_SS 25 + +/* + * Floating point register state + */ +typedef char __fpregset_t[512]; + +/* + * The padding below is to make __fpregs have a 16-byte aligned offset + * within ucontext_t. + */ + +typedef struct { + __gregset_t __gregs; + long __pad; + __fpregset_t __fpregs; +} mcontext_t; + +#define _UC_UCONTEXT_ALIGN (~0xf) + +#ifdef _KERNEL +#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_URSP]) +#endif + +#endif /* !_AMD64_MCONTEXT_H_ */ |